Foundation for switch and signal connections



n G. H. JACKSON. Foundation for Switch and Signal Connections.

No. 223,650. Patented Jan. 20, 1880..

WITNESS RS INVENTOR WM I ATTORNEY,

N-PETERS PHOTO-UTHOGRAF'HER. WASHINGTON. D C.

. UNITED STATES PATENT OFFICE.

CALEB H. JACKSON, OF HARRISBURG, PENNSYLVANIA.

FOUNDATION FOR SWITCH AND SIGNAL CONNECTIONS.

SPECIFICATION forming part of Letters Patent N0. 223,650, dated January20,1880.-

Application filed October 31, 1879.

To all whom it may concern Be it known that I, CALEB H. JACKSON, of thecity of Harrisburg, county of Dauphin, and

State of Pennsylvania, have invented an Improvement in Switch and SignalConnection Foundations for Railways, of which the following is a full,clear, and accurate description, reference being had to the adcompanyingdrawings, making a part of this specification, in which- Figure 1represents a transverse sectional view of a railway supported on girderswith my switch and signal connection foundationsapplied to said girders.Fig. 2 represents a top View of the same, some of the parts being brokenaway. Fig. 3 represents aperspective view of one of the extendedpedestals or foundations, made of angle'iron. Fig. .irepresents aperspective view of a bell-crank pedestal, made of T-iron.

My improvement is specially designed for that class of railways whosecross-ties are supported upon girders or stringers, thus includingelevated railways and railways on bridges and trestle-work.

The nature and object of my invention will be better understood when itis observed that in said class of railways the girders or stringers arelocated directly under the cross-ties, and are the permanent support ofthe way, while the cross-ties and rails have to be re placed from timeto time by substitutes for those worn out. My invention, therefore,makes provision to mount the switch and signal connection foundations onsaid girders or stringers permanently and independent of the cross-ties,and consequently they need not be removed when the way proper is beingrepaired; and for this object or purpose I employ suitable extensionpedestals or foundations, which are clamped to said girders by clips, orare bolted thereto direct at their inner ends, and at their other endsare bolted to the bases of the stands. Said pedestals or foundations aremade of angle-iron, T-iron, or of other suitable form of bar, and areformed as right and left pedestals, to be applied in pairs with theflange of the angle or T-iron turned up to form a seat between them, onwhich the bases of the stands may rest.

The principal novel features of my improvement are, first, the offset orextension pedestals, suitably curved or directed to secure properalignment of the stands mounted thereon with the track when applied tothe railway girders or stringers; second, the pedestals, when formed asright and left parts of apair, and secured, independently of thecrossties, to the girders or stringers, and joined to the bases ofswitch-stands directly.

In the description, A B represent the right and left pedestals,respectively, of the foundations, on which are mounted the bell-crankstand F E or the sheave-keeper stand S, also termed the carrier-stand,and there may in like manner be mounted thereon compensatorstands, whichneed notbe here described. Said pedestals may be made of angle-iron, asshown in Fig. 3, or of T-iron, as shown in Fig. 4. They are curved oroffset vertically, as shown in Fig. 1, to obtain the requisite elevationfor the stands mounted thereon to present the connecting rods or pipesat nearly level with the tops ofthe cross-ties T. Alayer of wood, D, issometimes inserted between the base F of the stand and the pedestals Aand B.

The track H H H (shown as a stubswitch) is mounted, by the usualcross-ties, T, on girders N, as in elevated railways, and said pedestalsare joined to said girders transversely over the top of them, and heldin place by clips P, as shown in Fig. 1, or bolted onto said girdersdirect.

The device shown at E F h g is abell-crank stand, by which theswitch-rails H H are operated and held. Its foundations or pedestals A Bhave a wrenching strain on them at the time of moving the switch.therefore stayed in place by the braces a a, which are bolted fast bothto the pedestals and to the girder N, as shown.

The device shown atS l d isa sheave-keeper stand, by which theconnecting-rods d are carried on sheave-rollers O therein, and thusguided and stiffened when operated and held. To lessen weight the parts01 are usually made of pipe, and joined to the jaws h by screwjoints at9. Its foundations, also, are pedestals A B, and as no strain is onthem, since the sheave-rollers relieve friction, no braces are requiredto stay them; but it is sometimes necessary to insert a layer of wood,M, be

They are tween the girder and the pedestals on which it rests to securecorrect alignment of the sheaves O with the top of the cross-ties T,

which sometimes differ in height or thickness.

Although the main object of my foundations is to supplement the road-bedof elevated railways, as set forth, yet in many instances the groundroad-bed of railways may .have the pedestals applied to itin severalways,

as, first, there may be a sill of wood inserted under the cross-ties, towhich they may be spiked; second, plank may be supported on or over thecross-ties, to which the pedestals invention, I here append thefollowing claims: 20

1. The pedestals or foundations A B, suitably oft'set or directed tosecure proper alignment of the stands mounted thereon with therailway-track H, and secured to 'the girders N, substantially asand forthe purposes set 25 forth.

2. The pedestal A B, secured to a railway girder or stringer, N, incombination with the base of a switch-connection stand, substantially asand for the purpose set forth. 0

In testimony that I claim the foregoing as my invention I have hereuntoset my hand this 21st day of October, 1879.

oAnnB H. JACKSON.

Attest: THEOPHILUS WEAVER, D. A. KEPNER.

